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Wireless energy efficient occupancy-monitoring system for smart buildings (2019)
Journal Article
Lasla, N., Doudou, M., Djenouri, D., Ouadjaout, A., & Zizoua, C. (2019). Wireless energy efficient occupancy-monitoring system for smart buildings. Pervasive and Mobile Computing, 59, https://doi.org/10.1016/j.pmcj.2019.101037

© 2019 Elsevier B.V. Rationalizing energy consumption in smart buildings is considered in this paper, and a wireless monitoring system based on Passive Infrared sensors (PIRs) is proposed. The proposed system is pervasive and can be integrated in exi... Read More about Wireless energy efficient occupancy-monitoring system for smart buildings.

Machine learning for smart building applications: Review and taxonomy (2019)
Journal Article
Djenouri, D., Laidi, R., Djenouri, Y., & Balasingham, I. (2019). Machine learning for smart building applications: Review and taxonomy. ACM Computing Surveys, 52(2), 1-36. https://doi.org/10.1145/3311950

© 2019 Association for Computing Machinery. The use of machine learning (ML) in smart building applications is reviewed in this article. We split existing solutions into two main classes: occupant-centric versus energy/devices-centric. The first clas... Read More about Machine learning for smart building applications: Review and taxonomy.

A Survey on Urban Traffic Anomalies Detection Algorithms (2019)
Journal Article
Djenouri, Y., Belhadi, A., Lin, J. C., Djenouri, D., & Cano, A. (2019). A Survey on Urban Traffic Anomalies Detection Algorithms. IEEE Access, 7, 12192-12205. https://doi.org/10.1109/access.2019.2893124

© 2019 IEEE. This paper reviews the use of outlier detection approaches in urban traffic analysis. We divide existing solutions into two main categories: flow outlier detection and trajectory outlier detection. The first category groups solutions tha... Read More about A Survey on Urban Traffic Anomalies Detection Algorithms.

Frequent itemset mining in big data with effective single scan algorithms (2018)
Journal Article
Djenouri, Y., Djenouri, D., Chun-Wei Lin, J., & Belhadi, A. (2018). Frequent itemset mining in big data with effective single scan algorithms. IEEE Access, 6, 68013-68026. https://doi.org/10.1109/ACCESS.2018.2880275

© 2013 IEEE. This paper considers frequent itemsets mining in transactional databases. It introduces a new accurate single scan approach for frequent itemset mining (SSFIM), a heuristic as an alternative approach (EA-SSFIM), as well as a parallel imp... Read More about Frequent itemset mining in big data with effective single scan algorithms.

Adaptive learning-enforced broadcast policy for solar energy harvesting wireless sensor networks (2018)
Journal Article
Khiati, M., & Djenouri, D. (2018). Adaptive learning-enforced broadcast policy for solar energy harvesting wireless sensor networks. Computer Networks, 143, 263-274. https://doi.org/10.1016/j.comnet.2018.07.016

© 2018 Elsevier B.V. The problem of message broadcast from the base station (BS) to sensor nodes (SNs) in solar energy harvesting enabled wireless sensor networks is considered in this paper. The aim is to ensure fast and reliable broadcast without d... Read More about Adaptive learning-enforced broadcast policy for solar energy harvesting wireless sensor networks.

Exploiting GPU parallelism in improving bees swarm optimization for mining big transactional databases (2018)
Journal Article
Djenouri, Y., Djenouri, D., Belhadi, A., Fournier-Viger, P., Chun-Wei Lin, J., & Bendjoudi, A. (2019). Exploiting GPU parallelism in improving bees swarm optimization for mining big transactional databases. Information Sciences, 496, 326-342. https://doi.org/10.1016/j.ins.2018.06.060

© 2018 This paper investigates the use of GPU (Graphics Processing Unit) in improving the bees swarm optimization metaheuristic performance for solving the association rule mining problem. Although this metaheuristic proved its effectiveness, it requ... Read More about Exploiting GPU parallelism in improving bees swarm optimization for mining big transactional databases.

Data Mining-Based Decomposition for Solving the MAXSAT Problem: Toward a New Approach (2017)
Journal Article
Djenouri, Y., Habbas, Z., & Djenouri, D. (2017). Data Mining-Based Decomposition for Solving the MAXSAT Problem: Toward a New Approach. IEEE Intelligent Systems, 32(4), 48-58. https://doi.org/10.1109/MIS.2017.3121546

This article explores advances in the data mining arena to solve the fundamental MAXSAT problem. In the proposed approach, the MAXSAT instance is first decomposed and clustered by using data mining decomposition techniques, then every cluster resulti... Read More about Data Mining-Based Decomposition for Solving the MAXSAT Problem: Toward a New Approach.

Optimal placement of relay nodes over limited positions in wireless sensor networks (2017)
Journal Article
Bagaa, M., Chelli, A., Djenouri, D., Taleb, T., Balasingham, I., & Kansanen, K. (2017). Optimal placement of relay nodes over limited positions in wireless sensor networks. IEEE Transactions on Wireless Communications, 16(4), 2205-2219. https://doi.org/10.1109/TWC.2017.2658598

This paper tackles the challenge of optimally placing relay nodes (RNs) in wireless sensor networks given a limited set of positions. The proposed solution consists of: 1) the usage of a realistic physical layer model based on a Rayleigh block-fading... Read More about Optimal placement of relay nodes over limited positions in wireless sensor networks.

Efficient on-demand multi-node charging techniques for wireless sensor networks (2016)
Journal Article
Khelladi, L., Djenouri, D., Rossi, M., & Badache, N. (2017). Efficient on-demand multi-node charging techniques for wireless sensor networks. Computer Communications, 101, 44-56. https://doi.org/10.1016/j.comcom.2016.10.005

This paper deals with wireless charging in sensor networks and explores efficient policies to perform simultaneous multi-node power transfer through a mobile charger (MC).The proposed solution, called On-demand Multi-node Charging (OMC), features an... Read More about Efficient on-demand multi-node charging techniques for wireless sensor networks.

MAC protocols with wake-up radio for wireless sensor networks: A review (2016)
Journal Article
Djiroun, F. Z., & Djenouri, D. (2017). MAC protocols with wake-up radio for wireless sensor networks: A review. Communications Surveys and Tutorials, IEEE Communications Society, 19(1), 587-618. https://doi.org/10.1109/COMST.2016.2612644

The use of a low-power wake-up radio in wireless sensor networks is considered in this paper, where relevant medium access control solutions are studied. A variety of asynchronous wake-up MAC protocols have been proposed in the literature, which take... Read More about MAC protocols with wake-up radio for wireless sensor networks: A review.

One-step approach for two-tiered constrained relay node placement in wireless sensor networks (2016)
Journal Article
Chelli, A., Bagaa, M., Djenouri, D., Balasingham, I., & Taleb, T. (2016). One-step approach for two-tiered constrained relay node placement in wireless sensor networks. IEEE Wireless Communications Letters, 5(4), 448-451. https://doi.org/10.1109/LWC.2016.2583426

© 2012 IEEE. We consider in this letter the problem of constrained relay node (RN) placement where sensor nodes must be connected to base stations by using a minimum number of RNs. The latter can only be deployed at a set of predefined locations, and... Read More about One-step approach for two-tiered constrained relay node placement in wireless sensor networks.

Game theory framework for MAC parameter optimization in energy-delay constrained sensor networks (2016)
Journal Article
Doudou, M., Barcelo-Ordinas, J. M., Djenouri, D., Garcia-Vidal, J., Bouabdallah, A., & Badache, N. (2016). Game theory framework for MAC parameter optimization in energy-delay constrained sensor networks. ACM Transactions on Sensor Networks, 12(2), 1-35. https://doi.org/10.1145/2883615

Optimizing energy consumption and end-to-end (e2e) packet delay in energy-constrained, delay-sensitive wireless sensor networks is a conflicting multiobjective optimization problem. We investigate the problem from a game theory perspective, where the... Read More about Game theory framework for MAC parameter optimization in energy-delay constrained sensor networks.

Distributed low-latency data aggregation scheduling in wireless sensor networks (2015)
Journal Article
Bagaa, M., Younis, M., Djenouri, D., Derhab, A., & Badache, N. (2015). Distributed low-latency data aggregation scheduling in wireless sensor networks. ACM Transactions on Sensor Networks, 11(3), https://doi.org/10.1145/2744198

This article considers the data aggregation scheduling problem, where a collision-free schedule is determined in a distributed way to route the aggregated data from all the sensor nodes to the base station within the least time duration. The algorith... Read More about Distributed low-latency data aggregation scheduling in wireless sensor networks.

Synchronization protocols and implementation issues in wireless sensor networks: A review (2014)
Journal Article
Djenouri, D., & Bagaa, M. (2016). Synchronization protocols and implementation issues in wireless sensor networks: A review. IEEE Systems Journal, 10(2), 617-627. https://doi.org/10.1109/jsyst.2014.2360460

Time synchronization in wireless sensor networks (WSNs) is a topic that has been attracting the research community in the last decade. Most performance evaluations of the proposed solutions have been limited to theoretical analysis and simulation. Th... Read More about Synchronization protocols and implementation issues in wireless sensor networks: A review.

Congestion control protocols in wireless sensor networks: A survey (2014)
Journal Article
Kafi, M. A., Djenouri, D., Ben-Othman, J., & Badache, N. (2014). Congestion control protocols in wireless sensor networks: A survey. Communications Surveys and Tutorials, IEEE Communications Society, 16(3), 1369-1390. https://doi.org/10.1109/SURV.2014.021714.00123

The performance of wireless sensor networks (WSN) is affected by the lossy communication medium, application diversity, dense deployment, limited processing power and storage capacity, frequent topology change. All these limitations provide significa... Read More about Congestion control protocols in wireless sensor networks: A survey.

Fast distributed multi-hop relative time synchronization protocol and estimators for wireless sensor networks (2013)
Journal Article
Djenouri, D., Merabtine, N., Mekahlia, F. Z., & Doudou, M. (2013). Fast distributed multi-hop relative time synchronization protocol and estimators for wireless sensor networks. Ad Hoc Networks, 11(8), 2329-2344. https://doi.org/10.1016/j.adhoc.2013.06.001

The challenging problem of time synchronization in wireless sensor networks is considered in this paper, where a new distributed protocol is proposed for both local and multi-hop synchronization. The receiver-to-receiver paradigm is used, which has t... Read More about Fast distributed multi-hop relative time synchronization protocol and estimators for wireless sensor networks.

R^{4}Syn: Relative referenceless receiver/receiver time synchronization in wireless sensor networks (2012)
Journal Article
Djenouri, D. (2012). R^{4}Syn: Relative referenceless receiver/receiver time synchronization in wireless sensor networks. IEEE Signal Processing Letters, 19(4), 175-178. https://doi.org/10.1109/lsp.2012.2185491

A new time synchronization protocol for wireless sensor networks (WSN) is proposed. It uses the receiver-to-receiver principle introduced by the Reference Broadcast Synchronization (RBS), which reduces the time-critical path compared to the sender-to... Read More about R^{4}Syn: Relative referenceless receiver/receiver time synchronization in wireless sensor networks.

Traffic-differentiation-based modular QoS localized routing for wireless sensor networks (2010)
Journal Article
Djenouri, D., & Balasingham, I. (2011). Traffic-differentiation-based modular QoS localized routing for wireless sensor networks. IEEE Transactions on Mobile Computing, 10(6), 797-809. https://doi.org/10.1109/tmc.2010.212

A new localized quality of service (QoS) routing protocol for wireless sensor networks (WSN) is proposed in this paper. The proposed protocol targets WSN's applications having different types of data traffic. It is based on differentiating QoS requir... Read More about Traffic-differentiation-based modular QoS localized routing for wireless sensor networks.

On detecting packets droppers in MANET: A novel low cost approach (2007)
Conference Proceeding
Fahad, T., Djenouri, D., & Askwith, R. (2007). On detecting packets droppers in MANET: A novel low cost approach. https://doi.org/10.1109/ias.2007.47

One of the commonest threats that mobile ad hoc networks are vulnerable to is data packet dropping, which is caused either by malicious or selfish nodes. Most of the existing solutions to solve such misbehaviour rely on the watchdog technique, which... Read More about On detecting packets droppers in MANET: A novel low cost approach.